List: TOCFL 6

1. stuff, cram, squeeze in
2. crowded, congested
3. to block, obstruct

stupid, foolish, silly, naive

1. raw material, ingredient
2. source material

1. strength, physical power
2. energy, vigour

1. consequence, result, outcome
2. aftermath

1. transmit, spread, infect
2. contagious, infectious

1. package, wrap
2. packaging

letter of the alphabet

1. circle, ring
2. to encircle, surround
3. pen, enclosure (for animals)

1. extend, prolong, lengthen
2. extension, overtime